<a href="http://www.php.net/ChangeLog-5.php"target="_blank">Some of the more major changes include:
PHP 5 features the Zend Engine 2. For a list of Zend Engine 2 changes, please <a href="http://www.php.net/zend-engine-2.php"target="_blank">visit this webpage;
XML support has been completely redone in PHP 5, all extensions are now focused around the <a href="http://www.xmlsoft.org/"target="_blank"> excellent libxml2 library (see xmlsoft.org);
SQLite has been bundled with PHP. For more information on <a href="http://www.hwaci.com/sw/sqlite/"target="_blank"> SQLite, please visit their website. ;
Streams have been greatly improved, including the ability to access low-level socket operations on streams.
There have been many changes since Beta 1, some of them documented in the NEWS file and most language changes are documented in <a href="http://www.php.net/ZEND_CHANGES_PHP_5_0_0b2.txt"target="_blank">ZEND_CHANGES
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